357 Commons (Elementary and Secondary School)

A commons has a diversity of uses. Although each commons varies depending on the number of students and the space available, there are some common elements found in these occupancies: Administrative areas, food areas, study/quiet areas and hobby/game areas.

The following are not included in the costs: Equipment used in these specialty areas, e.g., kitchen equipment in the food areas.

Availability of Elevators by Area for this occupancy: No

Marshall Valuation Service sections: 18 and 48.

Typical Lives:

					Class
Quality	A	B	C	D	H	M	P	S	W
Low	40	40	35	30	--	--	30	30	--
Average	45	45	40	35	--	--	35	35	--
Good	45	45	40	35	--	--	35	35	--
Excellent	50	50	45	40	--	--	40	40	--

Quality Selection Guide:

Class A (Fireproof Structural Steel Frame): and Class B (Reinforced Concrete Frame):

Quality	Exterior Walls	Interior Finish	Mechanicals	HVAC
Average	Brick, precast concrete, block, some trim	Plaster or drywall, acoustic tile, hardwood or vinyl composition	Adequate lighting, plumbing and kitchen	Hot and chilled water (zoned)
Good	Brick, concrete or metal panels, formed concrete	Plaster or drywall, acoustic tile, carpet and vinyl, varied activity center	Good fluorescent fixtures, good plumbing and kitchens	Hot and chilled water (zoned)
Excellent	Stone, best brick, metal and glass, good ornamentation	Plaster, glazed finishes, pavers, carpet, varied recreation	Best lighting, plumbing, food services and audio	Hot and chilled water (zoned)

Class C (Masonry Bearing Walls):

Quality	Exterior Walls	Interior Finish	Mechanicals	HVAC
Low	Brick, block, tilt-up panels, bearing walls, wood joists, little trim	Painted walls, acoustic tile or drywall ceilings, asphalt tile, small game rooms	Minimum lighting & plumbing, few extras	Heat pump system
Average	Steel frame or bearing walls, brick, block or concrete, some trim	Plaster or drywall, acoustic tile, vinyl composition or hardwood	Adequate lighting, plumbing and kitchen and snack bars	Warm and cool air (zoned)
Good	Steel columns, web or bar joists, ornamental block or face brick	Plaster or drywall, acoustic tile, carpet and vinyl, good activity center	Good fluorescent fixtures, good plumbing and kitchens	Hot and chilled water (zoned)
Excellent	Steel frame, stone, brick, metal and glass, good ornamentation	Plaster, glazed finishes, pavers, carpet, varied recreation	Best lighting, plumbing, food services and audio	Hot and chilled water (zoned)

Class D (Wood or Steel Framed Exterior Walls):

Quality	Exterior Walls	Interior Finish	Mechanicals	HVAC
Low	Wood frame, stucco or siding, little ornamentation	Drywall, acoustic tile, asphalt tile, linoleum or wood floors	Minimum lighting & plumbing, few extras	Heat pump system
Average	Wood frame or pipe columns, good stucco or siding with some trim	Plaster or drywall, acoustic tile, vinyl composition or hardwood	Adequate lighting, plumbing and kitchen and snack bars	Warm and cool air (zoned)
Good	Steel or Glulam frame and joists, brick veneer, glass, best stucco	Plaster or drywall, acoustic tile, carpet and vinyl, good activity center	Good fluorescent fixtures, good plumbing and kitchens	Hot and chilled water (zoned)

Class P (Pole Frame):

Quality	Exterior Walls	Interior Finish	Mechanicals	HVAC
Low	Pole frame, good metal panels, finished inside, little trim	Painted walls, acoustic tile or drywall ceilings, asphalt tile, small game rooms	Minimum lighting & plumbing, few extras	Heat pump system

Class S (Metal Frame and Walls):

Quality	Exterior Walls	Interior Finish	Mechanicals	HVAC
Low	Pre-engineered, finished interior, insulation, little trim	Painted walls, acoustic tile or drywall ceilings, asphalt tile, small game rooms	Minimum lighting & plumbing, few extras	Heat pump system